CN212457489U

CN212457489U - Double-machine double-stage refrigeration compressor set arranged linearly

Info

Publication number: CN212457489U
Application number: CN202021202333.XU
Authority: CN
Inventors: 罗叶欣; 张云浩; 邹勇; 李昌阳; 张超; 胡士永; 黄劲松
Original assignee: Wuhan Mengte Energy Saving Equipment Co ltd
Current assignee: Wuhan Mengte Energy Saving Equipment Co ltd
Priority date: 2020-06-27
Filing date: 2020-06-27
Publication date: 2021-02-02
Anticipated expiration: 2030-06-27

Abstract

The utility model discloses a double-machine doublestage refrigeration compressor unit that straight line was arranged, including high-pressure compressor, high-pressure motor, low-pressure compressor, low-pressure motor, the oil separator, oil cooler and intercooler, high-pressure compressor power input end cascades the axletree ware through the high pressure and links to each other with high-pressure motor, low-pressure compressor power input end cascades the axletree ware through the low pressure and links to each other with low-pressure motor, low-pressure compressor exhaust end links to each other with high-pressure compressor suction end through low-pressure exhaust duct, high-pressure compressor exhaust end links to each other with the oil separator through high-pressure exhaust duct, high-pressure motor, high-pressure compressor, low-pressure motor are linear arrangement and arranges in public base in order. The utility model aims at providing a be the double-unit doublestage refrigeration compressor unit of installation and later stage maintenance of being convenient for that the straight line was arranged.

Description

Double-machine double-stage refrigeration compressor set arranged linearly

Technical Field

The utility model relates to a screw compressor unit, concretely relates to double-unit doublestage compressor unit that straight line was arranged.

Background

At present, a double-machine double-stage screw refrigerating compressor unit adopts innovative two-stage compression, one-stage throttling, incomplete intermediate cooling refrigeration circulation and two-stage supercooling modes, is flexible in volume ratio configuration, has the characteristics of simple system, low cost, high refrigeration efficiency, large refrigeration capacity range coverage and the like, is widely applied to industries such as food, dairy products, cold storages, chemical industry, polycrystalline silicon, PVC (polyvinyl chloride), pharmacy, coal and the like, and is a preferred product in the low-temperature refrigeration field with the evaporation temperature of-30 ℃ to-55 ℃.

At present, conventional double-machine two-stage refrigeration compressor unit is high-pressure compressor and high-pressure motor, and with low-pressure compressor and low-pressure motor parallel arrangement on public base, oil cooler, intercooler arrange the space department between high, low-pressure, arrange like this and make the high, low-pressure between the pipeline be complicated, cause the problem of mutual interference, still lead to the unit under the condition of limited width, the headspace is very little between the essential element, the operation and maintenance of not being convenient for.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a be the double-unit doublestage refrigeration compressor unit of installation and later stage maintenance of being convenient for that the straight line was arranged.

In order to achieve the above purpose, the present invention is realized by the following technical solution:

a linearly-arranged double-machine two-stage refrigeration compressor unit comprises a high-pressure stage compressor, a high-pressure stage motor, a low-pressure stage compressor, a low-pressure stage motor, an oil separator, an oil cooler and an intercooler, wherein the power input end of the high-pressure stage compressor is connected with the high-pressure stage motor through a high-pressure cascade shaft device, the power input end of the low-pressure stage compressor is connected with the low-pressure stage motor through a low-pressure cascade shaft device, the exhaust end of the low-pressure stage compressor is connected with the air suction end of the high-pressure stage compressor through a low-pressure stage exhaust pipeline, the exhaust end of the high-pressure stage compressor is connected with the oil separator through a high-pressure stage exhaust pipeline, and the high-pressure stage compressor, the low-pressure.

Optionally, the high-pressure stage compressor and the high-pressure stage motor are respectively arranged on the common base through a high-pressure stage compressor support and a high-pressure stage motor support; the low-pressure stage compressor and the low-pressure stage motor are respectively arranged on the oil separator through a low-pressure stage compressor support and a low-pressure stage motor support, and the oil separator is arranged on the public base.

Optionally, the oil cooler and the intercooler are disposed on a common base.

Optionally, the oil cooler oil inlet is connected with the oil separator through a pipeline valve and a filter assembly, and the oil cooler oil outlet is connected with the oil injection ports of the high-pressure stage compressor and the low-pressure stage compressor through a pipeline valve and a delivery pump assembly.

Optionally, the intercooler return air port is connected to the low pressure stage exhaust gas conduit by a conduit and valve.

Optionally, the low pressure stage compressor suction end is connected to a suction filter.

The technical scheme of the utility model, have following advantage:

the embodiment provides a linearly-arranged double-machine two-stage refrigeration compressor unit, the high-pressure stage and the low-pressure stage are linearly arranged, the width of the unit is greatly reduced, and the risk of ultra-wide transportation is avoided; the connecting pipelines of the high-pressure stage compressor, the low-pressure stage compressor, the intercooler, the oil cooler and the like are reasonably arranged without conflict and mutual interference, and the assembly is convenient; enough space is reserved on both sides of the high-pressure stage compressor, the low-pressure stage compressor and the motor, so that the operation and the maintenance are convenient; the space of the intercooler and the oil cooler is enough, so that the machine set can be conveniently installed on the site of the external pipe, and the installation engineering amount is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a linearly arranged dual-stage refrigeration compressor unit of the present invention;

in the figure: 1. a high-voltage stage motor; 2. a high-pressure cascade shaft device; 3. a high pressure stage compressor; 4. a low pressure stage exhaust conduit; 5. a low pressure stage compressor; 6. an intake filter; 7. a low-pressure cascade shaft device; 8. a low-voltage stage motor; 9. an oil separator; 10. a low-voltage level motor support; 11. an oil cooler; 12. a low pressure stage compressor mount; 13. a high pressure stage exhaust conduit; 14. an intercooler; 15. a high pressure stage compressor mount; 16. a common base; 17. high-voltage motor support.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

A two-stage refrigeration compressor set arranged linearly according to this embodiment is shown in fig. 1, and includes a high-pressure stage compressor 3, a high-pressure stage motor 1, a low-pressure stage compressor 5, a low-pressure stage motor 8, an oil separator 9, an oil cooler 11, an intercooler 14, and a common base 16, where a power input end of the high-pressure stage compressor 3 is connected to the high-pressure stage motor 1 through a high-pressure cascade shaft 2, a power input end of the low-pressure stage compressor 5 is connected to the low-pressure stage motor 8 through a low-pressure cascade shaft 7, an air suction end of the low-pressure stage compressor 5 is connected to an air suction filter 6, an air discharge end of the low-pressure stage compressor 5 is connected to an air suction end of the high-pressure stage compressor 3 through a low-pressure stage air discharge pipe 4, an air discharge end of the high-pressure stage compressor 3 is connected to the oil separator 9 through a high-pressure, The oil separators 9 are arranged in a line on a common base 16.

The high-pressure stage compressor 3 and the high-pressure stage motor 1 are respectively arranged on a common base 16 through a high-pressure stage compressor support 15 and a high-pressure stage motor support 17, the low-pressure stage compressor 5 and the low-pressure stage motor 8 are respectively arranged on an oil separator 9 through a low-pressure stage compressor support 12 and a low-pressure stage motor support 10, an oil inlet of an oil cooler 11 is connected with the oil separator 9 through a pipeline valve, a filter and other parts, an oil outlet of the oil cooler 11 is connected with oil injection ports of the high-pressure stage compressor 3 and the low-pressure stage compressor 5 through a pipeline valve, a return air port of an intermediate cooler 14 is connected with a low-pressure stage exhaust pipeline 4 through a pipeline and a valve, and the oil separator 9, the oil cooler 11 and the intermediate cooler 14 are arranged on the.

The utility model discloses a theory of operation: low-pressure low-temperature refrigerant vapor from the evaporation side of the system is filtered by a suction filter 6, the low-pressure low-temperature refrigerant vapor is compressed by a low-pressure stage compressor 5, mixed oil and refrigerant vapor are cooled by medium-temperature return air from an intercooler 14 in a low-pressure stage exhaust pipeline 4, directly enter a high-pressure stage compressor 3, are compressed again and enter an oil separator 9 through a high-pressure stage exhaust pipeline 13, high-temperature oil and high-temperature high-pressure refrigerant gas in the oil separator 9 are separated, the high-temperature oil enters an oil cooler 11 to be cooled and then is supplied to the high-pressure stage compressor 3 and the low-pressure stage compressor 5 for circulation, and the separated high-temperature high-pressure refrigerant gas is discharged to the condensation side of.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. A linearly-arranged double-machine two-stage refrigeration compressor unit comprises a high-pressure stage compressor, a high-pressure stage motor, a low-pressure stage compressor, a low-pressure stage motor, an oil separator, an oil cooler and an intercooler, wherein the power input end of the high-pressure stage compressor is connected with the high-pressure stage motor through a high-pressure cascade shaft device, the power input end of the low-pressure stage compressor is connected with the low-pressure stage motor through a low-pressure cascade shaft device, the exhaust end of the low-pressure stage compressor is connected with the air suction end of the high-pressure stage compressor through a low-pressure stage exhaust pipeline, and the exhaust end of the high-pressure stage compressor is connected with the oil separator through a high-pressure stage exhaust pipeline.

2. The linearly arranged twin-stage refrigeration compressor train according to claim 1, wherein the high-pressure stage compressor and the high-pressure stage motor are respectively disposed on a common base through a high-pressure stage compressor support and a high-pressure stage motor support; the low-pressure stage compressor and the low-pressure stage motor are respectively arranged on the oil separator through a low-pressure stage compressor support and a low-pressure stage motor support, and the oil separator is arranged on the public base.

3. The linearly arranged dual stage refrigeration compressor train of claim 1 or 2, wherein the oil cooler and the intercooler are disposed on a common base.

4. The linearly arranged dual stage refrigeration compressor train according to claim 3 wherein said oil cooler oil inlet is connected to an oil separator via a conduit valve and filter assembly and said oil cooler oil outlet is connected to oil injection ports of a high pressure stage compressor and a low pressure stage compressor via a conduit valve and transfer pump assembly.

5. The linearly arranged dual stage refrigeration compressor train of claim 4 wherein the intercooler return air port is connected to a low stage exhaust duct by a duct and valve.

6. The linearly arranged dual stage refrigeration compressor train of claim 1 wherein the low pressure stage compressor suction end is connected to a suction filter.